Orbit determination of geosynchronous satellites of a european satellite navigation system(ENSS)

摘要

A possible orbit constellation of a future European Satellite Navigation System(ENSS) as part of a Global Navigtaion Satellite System of the second generation (GNSS-2) may consist of inclined geosynchronous satellites in three orbital planes (IGSO) and geostationary satellites. Considering a possible selection of tracking stations a visibility simulation for the IGSO satellites was carried out.The dynamic orbit determination model has been developed and the corresponding Kalman filter was implemented in a software package. The effect of the number and distribution of the tracking stations on the satellite orbit accuracy was estimated using generated synthetic ENSS data with injected stochastic errors.The different error sources on the orbit accuracy were determined and are discussed.The results of the simusations show the achievable orbit determination accuracy for IGSO satellites.